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B. Rabii (UC Berkeley, Space Sciences Laboratory, Lawrence Berkeley National Laboratory), MAXIMA Collaboration
We discuss the status of the data obtained from the first two flights of the MAXIMA balloon-borne experiment. We have recently released a measurement of the power spectrum of the Cosmic Microwave Background from l=36 to l=785 from the data of the first flight, MAXIMA-1. The second flight (MAXIMA-2) was launched in June, 1999. During five hours of Cosmic Microwave Background observation, we mapped a 225 square degree region of the sky with extremely low galactic dust contamination. Approximately 50 square degrees of this region overlap with the observations of MAXIMA-1. The combination of MAXIMA's beam size and scan strategy make it sensitive to CMB fluctuations on angular scales from 10 arcmin to 5 degrees. The instrument consists of an off-axis Gregorian telescope with a 1.3 m primary mirror and a receiver housing a 16 element bolometer array cooled to 100 mK. Observations were made at 3 frequency bands centered at 150, 240, and 410 GHz.
The MAXIMA experiment is supported by NASA though grants NAG5-4454 and NAG5-3941, and by the Center for Particle Astrophyiscs, a National Science and Technology Center operated by the University of California, Berkeley, under Cooperative Agreement No. AST 9120005.
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